At this point in the book, it's not really NECESSARY to understand each part of what's happening here, but we can break this down into pieces. Below is the method method call in code tags..... You'll note the method you pasted is one of the 2 methods in the GameHelper class. The other method handles user input.

The method is called in the DotComBust class, in the setUpGame() method:

Do you understand what's going on in this above code?

It's going to take me a little bit to mark up the other method for you....